CN104412564A - Data backup method and device - Google Patents
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- CN104412564A CN104412564A CN201380032937.0A CN201380032937A CN104412564A CN 104412564 A CN104412564 A CN 104412564A CN 201380032937 A CN201380032937 A CN 201380032937A CN 104412564 A CN104412564 A CN 104412564A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1448—Management of the data involved in backup or backup restore
- G06F11/1451—Management of the data involved in backup or backup restore by selection of backup contents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1458—Management of the backup or restore process
- G06F11/1464—Management of the backup or restore process for networked environments
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/11—File system administration, e.g. details of archiving or snapshots
- G06F16/113—Details of archiving
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
- H04L67/5683—Storage of data provided by user terminals, i.e. reverse caching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2201/00—Indexing scheme relating to error detection, to error correction, and to monitoring
- G06F2201/80—Database-specific techniques
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Abstract
The present invention relates to a reliable method and device for backup of data from a first network to a second network. The method and device of the present invention can for example be used for a backup of voluminous data from the first to the second network via a link with a relatively small bandwidth.
Description
Technical field
Present invention relates in general to numerical data store and access, more specifically, relate to the mass data backup from first network to second network.
Background technology
The widespread deployment of the customer consumption equipment interconnected along with the Internet access gateway by configuring wired or radio network interface, we can refer to home network now.Most of equipment in home network or electrical equipment use home network to be communicated with the external world by the Internet.Household electrical appliance are connected to the equipment being commonly referred to home gateway.Home gateway is " often opening " equipment, and it not only guarantees that the Internet of home network device connects, and also guarantees such as the connection of one group of telephone plant of IP phone.Home gateway is generally connected to the Internet via single ADSL (asymmetrical digital subscriber line road) connection.Therefore, all devices in family is shared identical ADSL via gateway device and is connected.ADSL is connected to upload and download bit rate aspect and provides asymmetric bandwidth.Due to some factors, will lower than the available bandwidth for downloading for the available bandwidth uploaded.Compare uploading bandwidth, the use of home network device often has prior demand to download bandwidth, and for this use, this asymmetric bandwidth normally easily.
Meanwhile, the data volume of household equipment storage is increasing: photograph, film, document.The user of home network feels the data being necessary to protect them.Local backup on mass-memory unit is also unsatisfactory, because data can not resist chance failure, theft or fire.And because need extra and that other home network devices are shared low bit rate of uploading, be time-consuming to the external memory storage transferring large number of data on the Internet.If connect externally memory by ADSL to upload complete data backup and need a couple of days, then for the data revised after complete data backup starts and before upper once complete data has backed up, the any loss of data occurred in home network all can lose, as on before the part of once full backup is completely transmitted again, the data of amendment cannot resist loss of data.
Therefore, need one to consider to upload link bit rates and cover the data transmission method of the improvement that " centre " transmits, making the data stored can resist loss of data better
Summary of the invention
The object of the invention is to some inconvenience alleviating prior art.
It should be noted that the present invention proposes the data back up method of a kind of intermediate equipment realization, the backup data store server that the first equipment connection connected in first network connects by described intermediate equipment to second network.Described method comprises the first uploading step, when the first predetermined time delay expires, uploads to described backup data store server the full backup archives that described intermediate equipment sets up according to the data of described first device storage.The full backup archives that described backup data store server stored are replaced by the full backup archives being uploaded to described backup data store server completely.Described method also comprises the second uploading step, when described first uploads period and expire in the second predetermined time delay shorter than described first predetermined time delay, upload to described backup data store server at least one differential backup archives that described intermediate equipment sets up according to the data of described first device storage.Each differential backup archives at least one differential backup archives described in uploading in described second uploading step there are differences relative to the full backup archives uploaded completely recently uploaded in described first uploading step.
According to the variant embodiment of the inventive method, according to the bit rate of up link described intermediate equipment being connected to the memory in described second network, and according to the size of at least one full backup archives and at least one differential backup archives described, determine described first predetermined time delay and described second predetermined time delay.
According to the variant embodiment of the inventive method, only when the full backup archives of redaction are uploaded to memory completely, just from described backup data store server, delete the full backup archives uploaded.
According to the variant embodiment of the inventive method, described first network is local area network (LAN), and described second network is the Internet.
According to the variant embodiment of the inventive method, described intermediate equipment is by the gateway of second network described in described first equipment access that connects in described first network.
The invention still further relates to a kind of equipment of the backup data store server for the data backup of the connect in first network first device storage being connected to second network, it comprises profiling module, for setting up full backup archives according to the data of described first device storage, and set up at least one differential backup archives according to the data of described first device storage.Equipment for backing up also comprises time block, and for determining expiring of the first predetermined time delay and the second predetermined time delay, described second predetermined time delay is shorter than described first predetermined time delay; And for first network interface that first uploads, described first uploads and uploads described full backup archives when described first predetermined time delay expires to described backup data store server, wherein, replaced by the full backup archives being uploaded to described backup data store server completely the full backup archives that described backup data store server stored.Described first network interface is also when described first uploads period and expire in described second predetermined time delay, at least one differential backup archives is uploaded to described backup data store server, wherein, each the differential backup archives at least one the differential backup archives uploaded relative to described first on the full backup archives uploaded completely recently uploaded of crossing there are differences.
Accompanying drawing explanation
By and the description of non-limiting example concrete to the present invention, the more advantage of the present invention will be represented.With reference to the following drawings, embodiment is described:
Fig. 1 illustrates and can realize typical prior art home network environment of the present invention wherein.
Fig. 2 illustrates the data upload from first network to second network realized by GW 111 in such as Fig. 1.
Fig. 3 illustrates the realization to being suitable for the equipment realizing the present invention and different variant embodiment thereof.
Fig. 4 illustrates the alternative being suitable for the equipment realizing the present invention and different variant embodiment thereof.
Fig. 5 illustrates according to the concrete and method of the present invention of non-limiting embodiments with the form of sequential chart.
Embodiment
Fig. 1 illustrates the example that can realize typical local area network (LAN) of the present invention wherein.Local area network (LAN) 1100 is arranged in user's house 110.User's house is connected to outer net 100 by ADSL (asymmetrical digital subscriber line road) 1000, such as, provide the Internet of storage server 118, this storage server 118 in local area network (LAN) preserve the remote storage of data.Local area network (LAN) includes gauze (1100) and wireless network (1110,1107), and comprises following equipment:
-gateway (GateWay is abbreviated as GW) 111;
The multimedia hard disc equipment 113 (MSD) of-record and movie, photograph etc.;
-have the Internet connect Digital Television 112 (Digital Tele Vision, is abbreviated as DTV);
-laptop personal computer 117 (LPC);
-desktop type PC 119 (DPC);
These equipment are interconnected by polytype connection:
-the wired ethernet that MSD 113, DTV 112 and DPC 119 is connected to GW 111 is connected 1100;
-LPC 117 is connected to the wireless connections 1110,1107 of GW 111;
-MSD 113 is connected to DTV 112 HDMI connect 1101.
Lan device 112,113,117 and 119 uses them to be connected to the local area network (LAN) of gateway 111 access obtained the Internet.A lot of equipment in local area network (LAN), as MSD 113, DPC119 and LPC 117 comprises data storage.The total amount of the data storage device in home network may be important.Typical local area network (LAN) (as home network) comprises the equipment storing photograph, film and music.The data be stored on equipment are a large amount of and are valuable concerning its user, but do not take effectively keeping to resist loss of data.Due to data backup slowly and set up trouble, therefore data backup is amorphous; Individually or by user or by equipment copy data to external memory devices (comprising storage server 118) on CD or DVD or the Internet at the most.There is not system, organized and appropriate management, the data backup of sufficient protection is provided for resisting loss of data.
The present invention proposes a kind of protection in a satisfactory manner and is stored in the solution of the data be connected on the equipment of local area network (LAN).
For the present invention is described, we consider a user for the ADSL access service connected for the Internet, and as lived in the kinsfolk in house 110, uploading bandwidth is limited.Therefore, it is time-consuming for uploading mass data (as photograph, video etc.).
In professional environment, as in enterprise network, there is redundancy technique, this redundancy technique such as creates full backup archives weekly.At the end of next sky, store " increment (delta) " backup on the server, this increment comprises the difference between full backup and backup every day, or the difference between backing up and backed up every day on the same day every day comprising the previous day.Then this process is repeated weekly.This method is efficient, because specialized network can be used for transferring large number of data at short notice, such as, from user PC to data backup server.But the method is not suitable for must in the situation slowly connecting transferring large number of data, that is, the situation needing such as more than a day (as 4 days) is backed up weekly in transmission.Completing in the time needed for full backup, do not carry out backup every day.Thus, cannot recover transmitting the data of losing in time period of backing up weekly.As typical example, the size of the data (" data archival ") that back up is 5G byte.Consider that stream bit rate is that 1 hour HD (high definition) video of 10Mb/s has 36G byte, this size is unrare.It is 128kb/s (ADSL provides the bit rate of uploading of the highest 448Kbps in ideal case, and the highest 1.4Mbs's of ADSL2+ permission uploads bit rate in ideal case) that the typical mean that standard A DSL connects uploads link bandwidth.Such as, when reserved 75% for uploading data archives, upload the data costs 4 days 19 hours 45 minutes of this amount (that is, to calculate (5.10 second
9x 8bits)/(3/4*128.10
3)).Therefore, clearly, guarantee that every day, backup was impossible with this data archival size and this uploading bandwidth.After archives start to upload that time, the data revised in local area network (LAN) can not be recovered, this is because just start new backup after full backup completes when losing.
The invention provides a solution of this problem.The present invention includes a kind of permission simultaneously and the method for automaticdata transmission, this transfer of data may be used for such as transmitting weekly full backup and every day backs up, to guarantee data backup better.
At local area network (LAN), as in home network, gateway is assigned to center role.Gateway and home network device interconnect and have high usage, because its most of the time all keeps start.In home network, the data transmission bauds in wired connection is high, as 100Mbit/s or higher.Therefore, if be provided for by gateway the high-speed cache mass data in home network device being uploaded to outer web storage, then gateway can be used to be uploaded Backup Data from oneself by home network device and to liberate.
The present invention includes a kind of data transmission method, it is to upload capacity communication chain road direction network memory transferring large number of data effective especially by low.Particularly, method of the present invention is when being applied to Backup Data transmission, by local cache, automatically and complete and incremental backup simultaneously (as, complete: weekly, part: every day), unique combination to persistent data and the adaptive management for communication links capacity, guarantee to recover the data of losing for predetermined amount of time (as every day).
Fig. 2 illustrates according to method of the present invention, the transfer of data from first network to second network realized by GW 111 in such as Fig. 1.For making explanation understand, suppose to carry out a full backup in every two days, that is, according to this example, within two days, corresponding to the time of uploading required for full backup, this time determined by transmitting the bottleneck that uploading speed and uplink link bandwidth utilization rate formed.If uploading bandwidth is 128kb/s, the utilance for uploading data archives is 75%, then full backup can comprise the data of the highest 2GB.
In Fig. 2, T0 to T9 represents the moment.D1 to D10 represents sky.Letter " A " represents Backup Data, e.g., such as, sets up according to the data that the equipment in home network stores and the two days full archivs formed on GW 111 when T0.Except needing the full archiv uploaded over these days, gateway also being formed and needs to be less than the increment archives uploaded over 1 day.Increment archives relate to the difference with the full archiv being uploaded to second network." dZ@T1 " represents archives every day, at the end of comprising the full archiv Z (not shown) and first day previously uploaded in home network device relative to any difference (d represents " increment (delta) ", "@" expression " at (at) ") between the data modification of archives Z." dA@T2 " represent second every day archives, it comprises and at the end of second day, is uploaded to any difference between the full archiv A of second network completely.Similarly, B represents the two days new full archivs set up at the end of second day.DA@T3 and dB@T4 represents respectively at the end of the 3rd day and the 4th day, comprises respectively archives every day of difference between full archiv A and B.Similarly, C represents the two days new full archivs set up at the end of the 4th day.DB@T5 and dC@T6 represents respectively at the end of the 5th day and the 6th day, comprises respectively archives every day of difference between full archiv B and C.Arrow represents from GW 111 uploading to second network, such as, represent this second network by the remote storage server 118 being connected to the Internet in Fig. 1.Cornerwise shaded boxes represents uploading data, as being uploaded to the data of remote memory.
Therefore, when T0, the equipment in local area network (LAN) transmits to gateway the data that they will back up, and gateway forms archives A according to these data.When T0, start to transmit this full backup from gateway to remote memory.Owing to transmitting needs two days, archives are uploaded to remote memory completely when T2.Period is uploaded at this of archives A, when T1, GW constitutes incremental backup (dZ@T1), it comprises full archiv Z (not shown) that the last time uploads and (that is, starts one day after transmitting archives A to remote memory) when T1 from the difference wanted between Backup Data of lan device.In other words, with the difference of archives Z at the end of increment dZ@T1 is included in first day.When T1, increment dZ@T1 is transferred to remote memory, namely walks abreast with the transmission still at the archives A carried out or side by side transmits.Between T1 and T2, certain time is located, and this increment is completely transmitted to remote memory (shaded boxes 200).When T2, namely at the end of D2, start to transmit another increment (dA@T2) to remote memory.Between T2 and T3, certain time is located, and this difference is fully uploaded to remote memory.Therefore, present remote memory comprises increment dZ@T1, archives A and increment dA@T2 thereof
Particularly, this meaning:
-rise in the moment (time namely at T2) of uploading A to remote memory, the arbitrary data lost in a local network when can return to T0 according to A, as recovered (if archives A not yet destroys) from gateway or recovering from remote memory;
-from the moment (namely between T1 and T2) of uploading A and dA T2 to remote memory, can according to A or from A+dA T2 (to during T2 to the amendment of data) return to T0 or T2 time the arbitrary data lost in a local network.
When T2, GW forms new full archiv B, comprises to the data modification in local area network (LAN) during T2.Once upload this archives to remote memory, namely when T4, can remove archives A, increment dZ@T1 and dA@T2 from remote memory, because B represents the last state of data in local area network (LAN), namely during T2, itself and A+dA@T2 repeat.Then, to upload increment dA@T3 and dB@T4 with previously described archives A and increment dZ@T1, mode that dA@T2 is identical.Equally, start when T4 to transmit archives C, start when T5 to transmit increment dB@T5, and start when T6 to transmit increment dC@T6.
Modified embodiment according to the invention, when the archives upgraded and increment arrive at, the archives and their increment that have stored are not deleted in remote memory, its advantage is can when recovering data for the user of lan device provides greater flexibility, namely, because data keep being stored on remote memory, the state of data recovery every day can be carried out in local area network; As the example in Fig. 2, if all archives Z, A, B, C and their incremental miantenance are stored on remote memory, accumulator system can recover the state of data when T0, T1, T2, T3, T4, T5, T6 in local area network (LAN) when T7.When data integrity be uploaded to remote memory time, gateway archives generate after difference file just need not retain data again on gateway.Such as, when dA@T3 is uploaded to remote memory completely, i.e. the some time between T3 and T4, create the increment archives for backup archives A by no longer needing, and the data on remote memory are shielded; Thus, can remove the file relevant with archives A from gateway, i.e. A and increment dA@T2, dA@T3, its beneficial outcomes is the memory space released in gateway.
In fig. 2, transmitting different archives A, B, C and their time delay needed for increment archives, to be represented as between each archives A, B, C and different increment be identical.The reason so done is in order to be concise in expression.In fact, time delay is variable and depends on available uploading bandwidth and archives size.But, generally speaking, because archives vary in size, increment upload that time delay is smaller than full backup upload time delay.Further, according to the present invention, during uploading complete and incremental backup archives at the same time, up link by uploading of carrying out simultaneously share.That is, calculate finally upload bit rate and produce the time of uploading needed for archives and their increment time, this point be considered.
The remote memory discussed can be dissimilar, as be positioned at diverse location geographically via WAN (wide area network), backup of memory that Internet provider provides or specific store server or enterprise storage server group.
Mention, the time delay externally needed for (the Internet) memory transfer data depend on size of data and be connected to external memory storage device communication link upload capacity.According to method of the present invention, consider the data transmission period of full backup, make the present invention be applicable to such as need even 10 days and the transmission of above full backup in 2 days or 3,4,5.According to method of the present invention, the quantity of filing every day adapts with to the time that remote memory transmits needed for full backup.Consider that following situation is favourable: the size of full backup is with wanting transmitted data amount either large or small, and uploading bandwidth may change for other objects outside data backup with connection 1000 (according to the data service rule such as set up by network manager, these other purposes may be considered to have higher priority).
Fig. 3 illustrates that the equipment being suitable for realizing the present invention and different variant embodiment thereof realizes, as GW in Fig. 1 111.
GW 111 comprises following key element:
-CPU 3210 or CPU;
-clock unit 3211;
-first network interface 3212;
-second network interface 3216;
-nonvolatile memory NVM 3213; And
-volatile memory VM 3214.
Processing unit 3210 can be implemented as microprocessor, self-defined chip, special (micro-) controller etc.Nonvolatile memory NVM 3213 can be implemented as the nonvolatile memory of arbitrary form, as hard disk, nonvolatile RAM, EPROM (erasable programmable ROM) etc.
Nonvolatile memory NVM 3213 is particularly including preservation to the register 32130 of the program that executable program represents and the register 32131 comprising persistent parameters, and wherein executable program comprises according to data transmission method of the present invention.When powering on, processing unit 3210 loads the instruction be included in NVM register 32130, is copied in VM register 32140, and performs.
VM memory 3214 particularly including:
-comprise the register 32140 of the copy of the program " prog " of NVM register 32130;
-data storage 32141, variable, parameter and other data required when performing register 32140 Program for storing.
Fig. 4 illustrates the alternative being suitable for the equipment realizing the present invention and different variant embodiment thereof.Equipment 400 comprises:
Acquisition module (408), for obtaining the data be stored in first network;
Profiling module (401), the data filing for being stored in first network is archives;
Transport module (402), for the data of being filed by profiling module to the memory transfer provided in the second network;
Time block (405), for determining whether the first predetermined time delay and the second predetermined time delay expire.
This equipment transmits at least one full archiv and at least one difference file of being filed by profiling module simultaneously, full archiv comprises the data obtained from first network with acquisition module, and difference file comprises the difference of the full archiv transmitted completely relative to nearest transport module from the data of first network acquisition;
When the first predetermined time delay expires, by time block triggering transport module transmission at least one partial data archives described, and when the second predetermined time delay expires, by time block triggering transport module transmission at least one difference file described, the second predetermined time delay is longer than in the first predetermined time delay.
According to variant embodiment, the present invention is all with hardware implementing, such as personal module (such as, ASIC or FPGA or VLSI) (be respectively application specific integrated circuit, field programmable gate array, ultra-large integrated), or realize with integrated different electronic modules in a device, or realize with the form of hardware and software mixing.
Fig. 5 illustrates one of the inventive method concrete, nonrestrictive example implementation with the form of sequential chart.
Double slashes (" // ") represents that the time is discontinuous.In this example, suppose, before the memory transfer archives in second network, the data obtained from first network to be converted to archives.Can by the pattern pushed away or draw, carry out from being connected to the transfer of data of first network 1100 equipment 113,117 and 119 to intermediate equipment 111, namely can obtain data (pull-mode) at intermediate equipment place from first network equipment when intermediate equipment initialization, or obtain (push-model) when first network device initialize at intermediate equipment place.Data archival comprises the data of compressed format, thus compares unpressed form and can reduce size of data significantly, makes the storage of data and transmission allow to reduce storage resources and the Internet resources for its transmission.In figure, Y, Z, A, B correspond to different archives; DY, dZ, dA correspond to different difference file or " increment " archives, and it forms relative to the difference of " complete " archives Y, Z, A respectively according to the data obtained from first network.As further example, suppose that the time needed from intermediate equipment to each full archiv of the incremental transmission second network Y, Z, A, B is less than 7 days (being suitable for carrying out weekly the filing of full backup), and the time of transmitting each increment archives needs is less than 1 day (being suitable for the difference of filing every day and the nearest full backup transmitted completely).Below, will be called as " the first predetermined time delay " for the time delay (e.g., every 168 hours, corresponding to 7 days) triggering full backup, and will be called as " the second predetermined time delay " for the time delay (e.g., every 24 hours) triggering differential backup.Multiple increment archives are transmitted within the time of transmission full archiv.These increment archives represent the difference between data in first network and the nearest full archiv transmitted completely.Therefore, during transmission full archiv, transmit one or more increment archives, and the second time delay is set to the time shorter than the first time delay.But, restart the first predetermined time delay when full archiv transmission starts, restart the second predetermined time delay when increment file transmission starts.Therefore, according to previous example, in the time for transmitting full backup A, transmit 7 differential backup dZ.When needs consider what to there occurs when breaking down in first network, or when how to obtain from the memory second network the data corresponding to backup recently, be appreciated that the difference file transmitted between full archiv transmission period is relevant with the nearest full archiv transmitted completely.After flow chart is explained in detail, this point will be explained further.In Fig. 5, intermediate equipment 111 obtain data from first network equipment 113 and 119.Certainly, data can be obtained from any first network equipment.Further, method of the present invention can consider the change of the first network network topology that may occur method the term of execution, and some first network equipment may disconnect, and other possibility (weight) connects.
At first step 500 place, from intermediate equipment 111 to second network, transmission is used for the data archival Z stored by memory device 118.In step 501 and 502 places, obtain data from first network.When step 503 place and T=521, the second predetermined time delay expires (e.g., for triggering time delays in 24 hours of backup every day) and Trigger update transfer of data.When this time delay expires, intermediate equipment creates difference file dY (operation 503) according to the latest data obtained from first network, and this difference file dY comprises the difference (transmission of the not shown in the drawings archives Y of NB) of this latest data and the nearest full archiv (Y) transmitted completely.In step 504 place, to second network transmission difference file dY.In the meantime, the transmission of the next full archiv (i.e. Z) after Y is still underway.When T=523, transmit archives Z completely.Therefore, during T=522 to T=523, two transmission are carried out simultaneously, and this will slow down the transmission of ongoing full archiv Z, therefore represented by broken lined arrows 500.
(7 days after the transmission of full archiv Z e.g., are started when the first predetermined time delay expires at T=524; As, the time delay between T=520 and T=524), trigger the transmission of next full archiv A.This full archiv comprises the data mode of data up-to-date in network, corresponds to the data obtained in step 507 and step 508.In step 505, the latest data that intermediate equipment obtains according to this forms new full archiv A.In step 506, transmission full archiv A.At T=525, the second predetermined time delay expires again, and intermediate equipment forms the new archive that will transmit in step 509.New archive comprise equally from first network obtain latest data (namely, step 507 and 508 obtain) and the nearest full archiv transferring to second network completely between difference (as, dZ, because still carrying out in the transmission of trigger instants A).At T=526, stop the transmission of full archiv A.Before the first predetermined time delay expires, the first predetermined time delay expires again at T=527.In step 513, intermediate equipment forms the new archive of the difference between the latest data (that is, 511,512) comprising and obtaining from first network and the full archiv of nearest complete transmission, i.e. dA.This increment is transmitted, as shown in arrow 514 to second network.
For calculating predetermined first and second time delays, different parameters can be considered, as estimated available uploading bandwidth and archives size.
Expiring after relevant triggering with the second predetermined time delay, if the result that difference (increment) calculates does not have difference, then do not transmit increment, because the increment that will not transmit.
It should be noted that in the deletion to " old " archives during second network transmission archives.If backup policy does not allow to turn back to first scheduled time (e.g., the one week) time in the past, only have full archiv to be substituted by newer full archiv, just it is deleted from the memory second network.When needing to consider what there occurs when breaking down in first network and must recover data from the archives preserved in the second network, this point is easier to understand.Suppose to occur loss of data at T=530.At this moment, represent stored up-to-date data by archives Z and increment archives dZ, because when T=530, archives A is not also intactly transferred to second network.
In intermediate equipment, realize of the present invention substituting as described, the present invention also can be implemented as agency (proxy) application, and this agent application is arranged on and is connected on any first network equipment of second network.Advantageously, agent application is arranged on the equipment of such as home gateway, and home gateway is connected to first network and second network, and keeps start to make agent application be available concerning first network equipment at most of time.Alternatively, in the shutdown of first network equipment or when disconnecting with first network, agent application is moved in first network and be connected to second network and keep start or keep on the nearest first network equipment that is connected with first network, or agent application is activated (that is, roaming broker application) on the equipment that this is nearest.
Claims (6)
1. the data back up method that realizes of an intermediate equipment (111), described intermediate equipment is by first network (1100,1107,1110) the first equipment (112 connected in, 113,117,119) the backup data store server (118) connected in second network (100) is connected to, it is characterized in that, said method comprising the steps of:
First uploads (201): when the first predetermined time delay expires, the full backup archives that described intermediate equipment sets up according to the data of described first device storage are uploaded to described backup data store server, wherein, replaced by the full backup archives being uploaded to described backup data store server completely the full backup archives that described backup data store server stored;
Second uploads (200,202): when described first uploads period and expire in the second predetermined time delay shorter than described first predetermined time delay, at least one differential backup archives that described intermediate equipment sets up according to the data of described first device storage are uploaded to described backup data store server, wherein, upload in described second uploading step described in each differential backup archives at least one differential backup archives there are differences relative to the full backup archives uploaded completely recently uploaded in described first uploading step.
2. method according to claim 1, wherein, according to the bit rate of up link described intermediate equipment being connected to the memory in described second network, and according to the size of at least one full backup archives and at least one differential backup archives described, determine described first predetermined time delay and described second predetermined time delay.
3. the method according to claim 1 to 2 any one, wherein, only when the full backup archives of redaction are uploaded to memory completely, just deletes the full backup archives uploaded from described backup data store server.
4. the method according to claims 1 to 3 any one, wherein, described first network is local area network (LAN), and described second network is the Internet.
5. the method according to Claims 1-4 any one, described intermediate equipment is by the gateway of second network described in described first equipment access that connects in described first network.
6. one kind for by first network (1100,1107,1110) the first equipment (112 connected in, 113,117,119) equipment of the backup data store server (118) connected in the data backup stored to second network (100), is characterized in that comprising with lower device:
Profiling module (401), for setting up full backup archives according to the data of described first device storage, and sets up at least one differential backup archives according to the data of described first device storage;
Time block (405), for determining expiring of the first predetermined time delay and the second predetermined time delay, described second predetermined time delay is shorter than described first predetermined time delay;
The first network interface (406) of (201) is uploaded for first, described first uploads and uploads described full backup archives when described first predetermined time delay expires to described backup data store server, wherein, replaced by the full backup archives being uploaded to described backup data store server completely the full backup archives that described backup data store server stored;
Described first network interface is also when described first uploads period and expire in described second predetermined time delay, (200 are uploaded to described backup data store server, 202) at least one differential backup archives, wherein, each the differential backup archives at least one the differential backup archives uploaded relative to described first on the full backup archives uploaded completely recently uploaded of crossing there are differences.
Applications Claiming Priority (3)
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| EP12305705.1A EP2677694A1 (en) | 2012-06-21 | 2012-06-21 | Method for data transfer from a first network to a second network and apparatus implementing the method |
| EP12305705.1 | 2012-06-21 | ||
| PCT/EP2013/062756 WO2013189990A1 (en) | 2012-06-21 | 2013-06-19 | Data backup method and device |
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| CN104412564A true CN104412564A (en) | 2015-03-11 |
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| EP (2) | EP2677694A1 (en) |
| JP (1) | JP2015529871A (en) |
| KR (1) | KR20150023411A (en) |
| CN (1) | CN104412564A (en) |
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| JP2015210549A (en) * | 2014-04-24 | 2015-11-24 | 日本電気株式会社 | Information communication device, information communication system, and information communication method |
| KR101643729B1 (en) | 2015-10-28 | 2016-07-29 | 주식회사 인피니플럭스 | System and method of data managing for time base data backup, restoring, and mounting |
| US10034027B2 (en) * | 2016-03-10 | 2018-07-24 | Sony Corporation | Automatic MSO-based transfer of DVR content to new location of customer |
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Also Published As
| Publication number | Publication date |
|---|---|
| US9836356B2 (en) | 2017-12-05 |
| JP2015529871A (en) | 2015-10-08 |
| US20150347235A1 (en) | 2015-12-03 |
| KR20150023411A (en) | 2015-03-05 |
| EP2865166B1 (en) | 2017-11-01 |
| EP2865166A1 (en) | 2015-04-29 |
| EP2677694A1 (en) | 2013-12-25 |
| WO2013189990A1 (en) | 2013-12-27 |
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